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Finding the Fourth Proportional to 659,348.48, 909,920.72 and 372,862.82

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Solution

The fourth proportional to 659,348.48, 909,920.72 and 372,862.82 is: 514,561.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,348.48 : 909,920.72 = 372,862.82 : x
  2. Step 2: Convert to fraction form
    659,348.48/909,920.72 = 372,862.82/x
  3. Step 3: Cross multiply
    659,348.48x = 909,920.72 × 372,862.82
  4. Step 4: Simplify right side
    659,348.48x = 339,275,605,635.63
  5. Step 5: Solve for x
    x = 339,275,605,635.63/659,348.48
  6. Step 6: Final answer
    x = 514,561.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.